A documentary writer from China among whose works mentioned the existence of Sin-to (Sunda)and its port. Chau Ju-kua was descended from EmperorTai-tsung, holding the office of head of trade affairs with foreign countries in Tshuan-chou, a port city in Fu-kienprovince. His work, Chu-fan-chi or Concerning Far-off countries, was a collection of reports from Chinese traders and sailors between1178 and1225. This was the first Chinese document that mentioned the existence of Sunda and its port. InChou Kufei, which he wrote in 1178 inKwangshi, he described sho-poor the island of Java.